/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#ifndef QGLVERTEXBUNDLE_H
#define QGLVERTEXBUNDLE_H

#include <Qt3D/qcustomdataarray.h>
#include <Qt3D/qglattributevalue.h>
#include <Qt3D/qglattributeset.h>

#include <QOpenGLBuffer>
#include <QList>

QT_BEGIN_NAMESPACE

class QGLVertexBundlePrivate;
class QGLPainter;
class QGLAbstractEffect;
class QOpenGLShaderProgram;

class Q_QT3D_EXPORT QGLVertexBundle
{
public:
    QGLVertexBundle();
    QGLVertexBundle(const QGLVertexBundle& other);
    ~QGLVertexBundle();

    QGLVertexBundle& operator=(const QGLVertexBundle& other);

    void addAttribute(QGL::VertexAttribute attribute,
                      const QArray<float>& value);
    void addAttribute(QGL::VertexAttribute attribute,
                      const QArray<QVector2D>& value);
    void addAttribute(QGL::VertexAttribute attribute,
                      const QArray<QVector3D>& value);
    void addAttribute(QGL::VertexAttribute attribute,
                      const QArray<QVector4D>& value);
    void addAttribute(QGL::VertexAttribute attribute,
                      const QArray<QColor4ub>& value);
    void addAttribute(QGL::VertexAttribute attribute,
                      const QCustomDataArray& value);

    QGLAttributeSet attributes() const;

    QGLAttributeValue attributeValue(QGL::VertexAttribute attribute) const;

    int vertexCount() const;
    bool isEmpty() const { return vertexCount() == 0; }

    bool upload();
    bool isUploaded() const;

    QOpenGLBuffer buffer() const;

    bool bind();
    void release();

private:
    QGLVertexBundlePrivate *d_ptr;

    Q_DECLARE_PRIVATE(QGLVertexBundle)

    friend class QGLPainter;
};

QT_END_NAMESPACE

#endif
